Detailed Description

vtkShepardMethod is a filter used to visualize unstructured point data using Shepard's method. The method works by resampling the unstructured points onto a structured points set. The influence functions are described as "inverse distance weighted". Once the structured points are computed, the usual visualization techniques (e.g., iso-contouring or volume rendering) can be used visualize the structured points.

Warning:

The input to this filter is any dataset type. This filter can be used to resample any form of data, i.e., the input data need not be unstructured.

The bounds of the data (i.e., the sample space) is automatically computed if not set by the user.

If you use a maximum distance less than 1.0, some output points may never receive a contribution. The final value of these points can be specified with the "NullValue" instance variable.

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Specify influence distance of each input point. This distance is a fraction of the length of the diagonal of the sample space. Thus, values of 1.0 will cause each input point to influence all points in the structured point dataset. Values less than 1.0 can improve performance significantly.

virtual double vtkShepardMethod::GetMaximumDistance

(

)

[virtual]

Specify influence distance of each input point. This distance is a fraction of the length of the diagonal of the sample space. Thus, values of 1.0 will cause each input point to influence all points in the structured point dataset. Values less than 1.0 can improve performance significantly.

virtual void vtkShepardMethod::SetModelBounds

(

double

,

double

,

double

,

double

,

double

,

double

)

[virtual]

Specify the position in space to perform the sampling.

virtual void vtkShepardMethod::SetModelBounds

(

double

[6]

)

[virtual]

Specify the position in space to perform the sampling.

virtual double* vtkShepardMethod::GetModelBounds

(

)

[virtual]

Specify the position in space to perform the sampling.

virtual void vtkShepardMethod::GetModelBounds

(

double

data[6]

)

[virtual]

Specify the position in space to perform the sampling.

virtual void vtkShepardMethod::SetNullValue

(

double

)

[virtual]

Set the Null value for output points not receiving a contribution from the input points.

virtual double vtkShepardMethod::GetNullValue

(

)

[virtual]

Set the Null value for output points not receiving a contribution from the input points.